This is a relic from the early days of computing. Inside of the yellowed-ivory plastic case is a HUGE hard drive with a whopping 40mb of storage capacity! When I powered it up it made a VERY LOUD sound, but i couldn't test it's functionality because i don't have the other necessary components. At any rate, it makes a fine collector's item.The item "VINTAGE GENUINE APPLE MACINTOSH 1987 40SC DISK DRIVE WITH SCSI CONNECTIONS" is in sale since Wednesday, December 13, 2017. This item is in the category "Computers/Tablets & Networking\Vintage Computing\Vintage Parts & Accessories". The seller is "stactemb" and is located in San Francisco, California. This item can be shipped worldwide.